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Matches 1 - 50 out of 5,204

Document Document Title
WO/2021/079647A1
In order to suppress wrong convergence of a filter coefficient without reducing data communication speed, this filter coefficient update amount output device is provided with: a first output unit which outputs a first coefficient update ...  
WO/2021/046136A1
An multi-input, multi-output audio process is implemented as a linear system for use in an audio filterbank to convert a set of frequency-domain input audio signals into a set of frequency-domain output audio signals. A transfer function...  
WO/2021/016000A3
An adaptive filter includes a frequency domain adaptation block that analyzes a statistic of coefficient movement in the frequency domain. The adaption block adjusts, in the frequency domain, a parameter (step size or leakage factor) tha...  
WO/2021/016002A1
An adaptive filter calculates frequency domain coefficients and in the frequency domain dynamically adjusts a leakage/step size parameter that controls adaptation of the adaptive filter based on the calculated frequency domain coefficien...  
WO/2021/016001A1
An adaptive filter converts time domain samples of an input signal into frequency domain signals, dynamically adjusts a stability conditional number based on the frequency domain signals, and uses the dynamically adjusted stability condi...  
WO/2020/248164A1
Some of embodiments of the present application provide an active noise reduction method, device and chip, and an active control system and a storage medium. The active noise reduction method comprises: performing frequency-domain adaptiv...  
WO/2020/204408A1
The present disclosure relates to an artificial intelligence (AI) system which simulates functions such as cognition, judgment, and the like of the human brain by utilizing machine learning algorithms such as deep learning and the like, ...  
WO/2020/153816A1
An electronic device in a wireless communication system according to various embodiments may comprise: a processor; a power amplifier (PA) for a first frequency band; a low-noise amplifier (LNA) for a second frequency band which at least...  
WO/2020/105430A1
The purpose of the present invention is to obtain an output signal y by performing waveform equalization in which an input signal x having non-linearity is expanded in a second-order Volterra series. The m-th output signal y(m) is determ...  
WO/2020/074771A1
An apparatus, method and computer program is described comprising: receiving a near-field audio source signal from a near-field microphone (22); receiving a far-field audio signal from an array comprising one or more far-field microphone...  
WO/2020/055994A1
A digital signal conditioner (DSC) system in which a sample selector bank (56) receives a digital sample block (A_SMPL) of an input signal (IN_SMPL) that is provided at a supported input oversampling factor and selects a subset of sample...  
WO/2020/000979A1
A modeling method for a spatial filter. The modeling method for the spatial filter comprises: obtaining the formula of a self-adaptive filtering algorithm (202); and changing the formula of the self-adaptive filtering algorithm to be a p...  
WO/2019/241877A1
In a general aspect, a motion detection system detects gestures (e.g., human gestures) and initiates actions in response to the detected gestures. In some aspects, channel information is obtained based on wireless signals transmitted thr...  
WO/2019/232610A1
A compensation circuit for an oven-controlled crystal oscillator serving as a reference for a phase-locked loop in holdover mode is disclosed. A non-linear function module generates a modified aging signal that is a non-linear function o...  
WO/2019/181734A1
Provided is a filter control method comprising: accepting a plurality of parameters which define a frequency response of a filter element used to control a sound signal and which include a parameter defining a central inclined portion be...  
WO/2019/141579A1
The invention relates to a method for estimating a radiorefrequency frame received by a plurality of antennae delivering a plurality of corresponding reception signals. Such a method comprises the following steps: detection, or not, of a...  
WO/2019/135053A1
The invention relates to a method for filtering an input signal (3b, 4b, 5b) relative to a physical variable of a turbine engine (9), the input signal being digitised, the method implementing frequency filtering of said signal in a compu...  
WO/2019/129838A1
The material invention shows a filter that is capable of filtering a noisy, periodic measurement signal having oscillations at a variable fundamental frequency and harmonic oscillation components of the fundamental frequency by virtue of...  
WO/2019/123682A1
An apparatus for controlling a system includes a memory to store a model of the system including a motion model of the system subject to process noise and a measurement model of the system subject to measurement noise, such that one or c...  
WO/2019/092798A1
In order to achieve high-speed convergence and low-distortion output signals without manually controlling a step size, a signal processing apparatus is provided with: a first input means that receives a first intermingled signal in which...  
WO/2019/056372A1
The invention provides a method of processing signals by an adaptive filter. The method includes the steps of determining a direct path distance d between a speaker and a microphone. Based on said determined direct path distance d, a num...  
WO/2018/234619A3
A method, computer-readable medium and apparatus are disclosed for:receiving, via a first track, a near-field audio signal from a near-field microphone;receiving, via a second track, a far-field audio signal from an array comprising one ...  
WO/2019/016494A1
We describe a method for acoustic source separation. The method comprises: inputting acoustic data from a plurality of acoustic sensors, said acoustic data comprising acoustic signals combined from a plurality of acoustic sources; conver...  
WO/2018/234617A1
A method, apparatus and computer-readable medium are disclosed for receiving, from a far-field microphone device, at least one far-field audio signal in a time domain corresponding to a mobile source located within a recording space, the...  
WO/2018/234618A1
A method, apparatus and computer-readable medium are disclosed for using a linear transformation of a far-field audio signal and a linear transformation of a near-field audio signal to determine a room impulse response filter relating to...  
WO/2018/226842A1
A method of performing cancellation for acoustic or electromagnetic measurement or communications includes receiving an output signal to be applied to a transmit transducer, introducing a delay to the output signal to produce a delayed o...  
WO/2018/225708A1
An equalizer is provided in which a balance between mounting cost and reception quality is achieved in SC-MIMO transmission. The equalizer can connect with N reception antennas that receive single-carrier transmission signals transmitted...  
WO/2018/103932A1
The invention relates to a method for adapting an electronic filter unit (40). At the beginning, a plurality of first input values (31) is captured within a first time period. Subsequently, filtered output values (36) are produced by fil...  
WO/2018/044801A1
Embodiments of source separation for reverberant environment are disclosed. According to a method, first microphone signals for each individual one of at least one source are captured respectively by at least two microphones for a period...  
WO/2017/189271A1
Embodiments of the present disclosure provide mechanisms that enable designing an FIR filter that would have a guaranteed globally optimal magnitude response in terms of the minimax optimality criterion given a desired weight on the erro...  
WO/2017/135012A1
An active vibration and noise control device robust against outside disturbances, and an active vibration and noise control circuit are provided. An adaptive control circuit (50) of this active vibration and noise control device (24) has...  
WO/2017/129569A1
Method and device for determining the parameters of an adaptive Kalman filter from an ARMA model of data from a time series and method and device for determining an ARMA model approximating a time series.  
WO/2017/100298A1
Various examples are provided related to speech recognition. In one example, a method includes converting an auditory signal into a pulse train, segmenting the pulse train into a series of frames having a predefined duration, and identif...  
WO/2017/097161A1
An apparatus, comprising a receiver configured to receive a primary signal that comprises a narrowband noise component and a broadband noise component, a processor coupled to the receiver and configured to determine, in a time domain, an...  
WO/2017/017056A1
Partitioned block frequency domain adaptive filter device comprising: a frequency domain adaptive filter configured for filtering a frequency domain representation of a time domain input signal depending on a set of filter coefficients c...  
WO/2017/012350A1
A filter state divergence judgement method and device, which are used for solving the problems in the prior art that a filter state judgement method has a relatively high calculation complexity and has a possibility of misjudgement. The ...  
WO/2016/134839A1
A channel selector (C0) for a frequency modulation radio frequency receiver, comprising a band-pass filter (2), of which the frequency band (BPF) is centred on the central frequency (F0) of the channel to be selected, and has a width tha...  
WO/2016/106145A1
A method is disclosed for audio object extraction from an audio content which includes identifying a first set of projection spaces including a first subset for a first channel and a second subset for a second channel of the plurality of...  
WO/2016/087087A1
In order to determine, at least approximately, statistical properties of raw measured values, particularly measurement noise and/or mean errors, without detailed knowledge of a filter procedure or filter for the raw measured values and w...  
WO/2016/055914A1
A method includes receiving a signal from a remote transmitter via an electrically- tunable antenna (32, 36) having a tunable element (34, 38, 98). An adjustment, to be applied to a response of the electrically-tunable antenna, is calcul...  
WO/2016/053939A1
The technology described in this document can be embodied in a computer-implemented method that includes receiving, at one or more processing devices, a plurality of values representing a set of coefficients of an adaptive filter over a ...  
WO/2016/050049A1
Disclosed are a signal processing method and apparatus. The method of the present invention comprises: filtering first input signals according to at least two groups of adaptive filters, so as to obtain filtered first input signals; acqu...  
WO/2016/029066A1
A digital signal synthesizer for generating a frequency and/or phase modified digital signal output comprises an input buffer, a transform module, a processing module, and an output buffer. The input buffer receives a digital input that ...  
WO/2016/026263A1
The present invention provides a method and device for determining stable factors of an adaptive filter. The method comprises: determining a reference input matrix of a first input signal according to the first input signal input to the ...  
WO/2015/139631A1
In one embodiment, a method for training an adaptive filter includes receiving, by a processor from a device, an input signal and a training reference signal and determining a correlation matrix in accordance with the input signal, the t...  
WO/2015/125282A1
This invention provides a technique for optimizing the resolutions and ranges of digital-to-analog converters in accordance with a communication path. A decision feedback equalizer of an electric signal transmission apparatus comprises a...  
WO/2015/072904A1
Encoding and decoding schemes at an encoding device/transmitter and decoder device/receiver, respectively, for use in communicating the state of a system. In an example method carried out by an encoding device, state information x(k), wh...  
WO/2014/037347A3
A method in a prediction filter for stabilizing filter performance of the prediction filter is provided. The method comprises computing a filter magnitude metric related to the prediction filter, smoothing the filter magnitude metric, cr...  
WO/2014/070570A1
One apparatus includes a notch filter that has a state observer unit and a parameter adaptation unit. The state observer unit is configured to receive a sampled noisy electrical signal and a sampled filtered electrical signal, the state ...  
WO/2014/006846A1
An active noise reduction device is used together with a secondary noise source which emits a secondary noise, and an error signal source which outputs an error signal which corresponds to a residual sound arising from interference betwe...  

Matches 1 - 50 out of 5,204